forums.ps2dev.org

[maweryck]

HI ALL

How to create the transparency in an image png for the psp?

[ShUr1k3n]

[LuMo]

not sure if every image editor can do that (guess paint can't although it can read andwrite png's)
Photothop can do it, thats for sure :)

greets
_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com

[MasterQ]

use photoshop to make transparent pngs.

but keep in mind that luaplayer can only do full transparency on the pngs. there is no semi-transparency yet. in my opinion this should be put in the player in future versions, because the graphics look really crappy without anti-aliasing. i heard somewhere that they are working on it, though.

[haust]

ok, so how can i save 16 bits png files with photoshop. Currently I can only save in 4, 8 or 24 bits....

[MikeHaggar]

Erhm... Save as 24 bit...

[link]

what if you dont have photoshop? my program shows a checker board for transparent area but when you save it as .png it turns the transparent area into white. are there any free programs that i can use because i dont want to pay $800 dollars to make an inch of a picture transparent.

If i do save it in my program an then run the lua it is just a bunch of boxes with lines. Is there away around this problem? Even if i open the picture and dont do anything, then resave, it it will still be lines. Is there a code imbedded in the .png?

[KawaGeo]

I just wrote a function that converts all background in a solid color to transparency. The code is given below.

[link]

Im i supposed to put this into my game code or run it sepperate? On psp or on PC?

PLEASE specify instructions. Where should i put the image that needs transparancy?

Give me some instructions PLEASE of what i should do.

[haust]

from what I see, you can just copy-paste the code in your game, load your image then transparentize it by specifying the transparency color and it should be ok.
Note that the transparency color should not be used in your non-transparent part of your image....

If I'm wrong someone will correct me.

[LuMo]

how about that?
rename transparentize to setTransparentColor(color)

usually Color.new(255,0,255) is used as transparency mask, cause its used in very few cases ;)

greets
lumo
_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com

[link]

tiles = Image.load("tiles.png")
figure = Image.load("figure.png")


function Image:setTransparentColor(color)
local p
local transparent = Color.new(0,0,0,0)
local result = Image.createEmpty(self:width(), self:height())
for x = 0, self:width()-1 do
for y = 0, self:height()-1 do
p = self:pixel(x, y) -- returns a color
if p == bgColor then
result:pixel(x, y, transparent)
else
result:pixel(x, y, p) -- copy the same color
end
end
end
return result
end
black = Color.new(0,0,0) -- solid color (for an example)

newImage = Image:setTransparentColor(black)
..............

this is what i have. it keeps saying now that it cant perform arithmatic on a nil value. Any ideas?

[LuMo]

<removed>
_________________
"Good artists copy, great artists steal."
Pablo Picasso
go2lumo.com

[jimjamjahaa]

[link]

man gimp is awesome!!!! it free and you can do LOTS with it!!!! at first i expected a paint program or something since it was free but you can do just about anything!!! I highly recomend gimp to anyone